Tank decision- need some thoughts

[punkieg0]

Looking for some opinions to add to my research for a new tank.
I am trying to decide between a new one or one I have found used.
New I am looking at the Red Sea Max- E170 , the IM 40 Nuvo mini fusion Pro or SCA 40 or 45 gallon
Or
I found a used Fluval M-90

Looking for thoughts on those 3 tanks? It would be my first AIO. I currently have a tank with a canister filter and cannot do a sump.

 

[Ranjib]

All three are good. Do you have any idea about live stock? If you are shooting for sps your equipment will matter most. Tank wise, all three are pretty good option.

 

[punkieg0]

All three are good. Do you have any idea about live stock? If you are shooting for sps your equipment will matter most. Tank wise, all three are pretty good option.

Since I am so new I want to start with the easier beginning corals. I think down the road I will look at a tank with a full sump when my knowledge has advanced and I can get into all the tools needed. So focus on mushrooms, leathers, Duncan’s etc.
That being said, I really want an anemone as well.